fix typo

Author: usamaahmadkhan

helm/aws-load-balancer-controller/README.md

@@ -259,7 +259,7 @@ The default values set by the application itself can be confirmed [here](https:/
 | `updateStrategy`                               | Defines the update strategy for the deployment                                                                                                                                                                                                                                                                                               | `{}`                                              |
 | `enableCertManager`                            | If enabled, cert-manager issues the webhook certificates instead of the helm template, requires cert-manager and it's CRDs to be installed                                                                                                                                                                                                   | `false`                                           |
 | `certManager.duration`                         | Overrides the default expiry duration for the webhook certificates. defaults to `90d`                                                                                                                                                                                           | `""`                                              |
-| `certManager.renewBefore`                      | Overrides the renewal time period duration for the webhook certificates. default i.e. `60d`                                                                                                                                                                              | `""`                                              |
+| `certManager.renewBefore`                      | Overrides the renewal time period duration for the webhook certificates. defaults to `60d`                                                                                                                                                                              | `""`                                              |
 | `enableEndpointSlices`                         | If enabled, controller uses k8s EndpointSlices instead of Endpoints for IP targets                                                                                                                                                                                                                                                           | `false`                                           |
 | `enableBackendSecurityGroup`                   | If enabled, controller uses shared security group for backend traffic                                                                                                                                                                                                                                                                        | `true`                                            |
 | `backendSecurityGroup`                         | Backend security group to use instead of auto created one if the feature is enabled                                                                                                                                                                                                                                                          | ``                                                |